radio: RTC6226: remove open and release v4l2_fh file

As part of v4l2_fh_open call at rtc6226 driver
open time memory is allocated via kzalloc() and
the same memory is not released at the time of
rtc6226 driver open failure case.
Remove the open and release v4l2_fh file as
it not required for rtc6226 driver.

Change-Id: I98195b9b0731d5392b82c3d12e393c6ffaad702c
Signed-off-by: himta ram <hram@codeaurora.org>